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2,041,014 research outcomes, page 1 of 204,102
  • publication . Article . Preprint . 2017
    Open Access English
    Authors:
    Charles A. Downing; Mikhail E. Portnoi;
    Persistent Identifiers
    Publisher: HAL CCSD
    Country: France
    Project: EC | CANTOR (612285), EC | NOTEDEV (607521), EC | CoExAN (644076), EC | INTERNOM (612624)

    The electrons found in Dirac materials are notorious for being difficult to manipulate due to the Klein phenomenon and absence of backscattering. Here we investigate how spatial modulations of the Fermi velocity in two-dimensional Dirac materials can give rise to locali...

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  • publication . Article . Preprint . Other literature type . 2017
    Open Access English
    Authors:
    Dmitry Gayfulin;
    Persistent Identifiers

    We call a positive real number $\lambda$ admissible if it belongs to the Lagrange spectrum and there exists an irrational number $\alpha$ such that $\mu(\alpha)=\lambda$. Here $\mu(\alpha)$ denotes the Lagrange constant of $\alpha$ - maximal real number $c$ such that $\...

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  • publication . Article . Preprint . 2020
    Open Access English
    Authors:
    Peterson, J. R.; O’Connor, P.; Nomerotski, A.; Magnier, E.; Jernigan, J. G.; Cheng, J.; Cui, W.; Peng, E.; Rasmussen, A.; Sembroski, G.;
    Persistent Identifiers

    We present a detailed method to simulating sensor distortions using a photon and electron Monte Carlo method. We use three dimensional electrostatic simulations to parameterize the perturbed electric field profile for non-ideal sensor details. We follow the conversion o...

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  • publication . Article . Preprint . 2021
    Open Access
    Authors:
    J. Brendan Hagan; George H. Rieke; Ori D. Fox; Alberto Noriega-Crespo; Dean C. Hines; Misty Cracraft; Macarena Garcia Marin;
    Persistent Identifiers
    Publisher: IOP Publishing

    We evaluate the hit rate of cosmic rays and their daughter particles on the Si:As IBC detectors in the IRAC instrument on the Spitzer Space Telescope. The hit rate follows the ambient proton flux closely, but the hits occur at more than twice the rate expected just from...

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  • publication . Preprint . Article . 2021
    Open Access English
    Authors:
    Paola Loreti; Daniela Sforza;
    Persistent Identifiers
    Publisher: Multidisciplinary Digital Publishing Institute

    Our purpose is to introduce a notion of weak solution for a class of abstract fractional differential equations. We point out that the time fractional derivative occurring in the equations is in the sense of the Caputo derivative. We prove existence results for weak and...

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  • publication . Article . Preprint . 2002
    Open Access English
    Authors:
    Bernd A. Berg; J. Riedler;
    Persistent Identifiers

    This paper deals with a situation of some importance for the analysis of experimental data via Neural Network (NN) or similar devices: Let $N$ data be given, such that $N=N_s+N_b$, where $N_s$ is the number of signals, $N_b$ the number of background events, both unknown...

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  • publication . Preprint . Article . 2017
    Open Access
    Authors:
    Michael Wolfe; F. A. Calderon-Vargas; Jason Kestner;
    Persistent Identifiers
    Publisher: American Physical Society (APS)

    Singlet-triplet qubits in lateral quantum dots in semiconductor heterostructures exhibit high-fidelity single-qubit gates via exchange interactions and magnetic field gradients. High-fidelity two-qubit entangling gates are challenging to generate since weak interqubit i...

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  • publication . Preprint . Article . 1998
    Open Access English
    Authors:
    E. Norrbin; Torbjörn Sjöstrand;
    Persistent Identifiers

    In the hadroproduction of charm in the context of string fragmentation, the pull of a beam remnant at the other end of a string may give a charm hadron more energy than the perturbatively produced charm quark. The collapse of a low-mass string to a single hadron is the ...

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  • publication . Preprint . Article . 2021
    Open Access English
    Authors:
    Alessia Gentili; Giorgio Volpe;
    Persistent Identifiers

    Abstract Diffusion processes are important in several physical, chemical, biological and human phenomena. Examples include molecular encounters in reactions, cellular signalling, the foraging of animals, the spread of diseases, as well as trends in financial markets and...

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  • publication . Article . Preprint . 2017
    Open Access
    Authors:
    Blekherman, Grigoriy; Sinn, Rainer;
    Persistent Identifiers
    Publisher: Springer Science and Business Media LLC
    Project: NSF | FRG: Collaborative Resear... (0757212), NSF | CAREER: Nonnegative Polyn... (1352073)

    The minimum number of observations such that the maximum likelihood estimator in a Gaussian graphical model exists with probability one is called the maximum likelihood threshold of the underlying graph G. The natural algebraic relaxation is the generic completion rank ...

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2,041,014 research outcomes, page 1 of 204,102